Anatomy - Chapter 7

*Motor neuron diagram*

What part of a nerve senses things and collects signals

Dendrite

If a nerve cell is myelinated does it make it white or gray matter

White

What is the thin coating/membrane on the outside of the brain

Pia mater

What are the two parts that are in the CNS?

Brain , spinal cord

What do schwann cells produce for the peripheral nervous system (PNS)?

Myelin sheaths

Term that is used for how the electricity moves through a nerve

Action potential

Part of the nerve that has the nucleus in it

Cell body

Three part of the brain stem

Pons , medulla oblongata, midbrain

What do you call the spaces in between the milenation in the axon

Nodes of raniver

What are all support cells in the CNS called

Neuroglia

Part of the brain that is in charge of coordination

Cerebellum

What part of the brain is known as the relay center (egg shaped)

Thalamus

As an axon moves off the cells body it is tapered and goes from wide to narrow. What is this called?

Axon Hillock

General term for the system that is away from the CNS

Peripheral Nervous System (PNS)

What do you call the neurons that connect motor neurons and sensory neurons in the spinal cord

Interneurons or association neurons

What is the end of the axon called

Axon terminal

Disorder when blood supply to the brain is blocked

CVA / stroke

What neuron moves to the CNS

Sensory neurons

What color are unmyelinated nerves

Gray

What is the thick outer covering of the brain called

Dura mater

Two divisions of the CNS

Sympathetic and parasympathetic

Layer between the dura mater and pia mater

Arachnoid layer

Does the CNS or PNS have nerves

PNS

What are the support cells that produce myelin in the CNS

Oligodendrocytes

What is the split between the right and left hemispheres of the cerebrum

Longitudinal fissure

Longest part of a nerve cell called

Axon

What are the cells in the CNS called

Tracts

Study this diagram!!